Duplex Steel Flange Nut
Product Code: DX-FN-2205
Premium duplex stainless steel flange nuts manufactured from S32205 (2205) material. These nuts combine the integrated washer design of flange nuts with the superior strength and corrosion resistance of duplex stainless steel.
Ideal for critical applications in offshore, chemical processing, and marine environments where standard stainless steel is insufficient.
| Material Grade | S32205 (2205) / S31803 / S32750 (2507) |
|---|---|
| Standard | DIN 6923 / ISO 4161 |
| Size Range | M6 to M36 |
| Tensile Strength | 620-800 MPa |
| Yield Strength | 450-550 MPa |
| Hardness | HRC 20-32 |
| PREN | ≥35 (excellent pitting resistance) |
| Finish | Plain / Passivated |
Key Features
Integrated Flange
Built-in washer distributes load over larger area
2x Strength
Twice the strength of 316 stainless steel
Superior Corrosion
Excellent resistance to chlorides and acids
Stress Corrosion
Resistant to stress corrosion cracking
Serrated Flange
Optional serrations prevent loosening
High Temperature
Suitable for temperatures up to 300°C
Applications
Offshore oil and gas platforms
Chemical processing equipment
Desalination plants
Marine and shipbuilding
Pulp and paper mills
Heat exchangers
Pressure vessels
Subsea equipment